Hoegger Goat Supply (you'll have to search for the address) has it; not a bad price. You know, our chickens are free range; most of the year they dust in the plain dirt anyway; and if I try to get them to dust in DE they look horrified and find somewhere else to dust; they just wont use it; even if I mix it with regular dust or ashes, I still have to do it when they're not looking. Does anyone know if the DE has a big advantage over the good ol' regular dirt they normally dust in?